Malicious PDF — malware analysis report

Static analysis result for SHA-256 251978059158726c…

MALICIOUS

PDF

70.9 KB Created: 2021-01-30 15:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b094e3ce238afa6c48393ce4c962938a SHA-1: f327162e515c8859e9add746baf6a06955e88a43 SHA-256: 251978059158726c47f0f8751384ae5e94f6e88d26ec7ab2c7accc1bbb7671bf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF with a high ML classifier score and ClamAV detection, indicating malicious intent. It contains an embedded URI pointing to 'https://druttle.ru/aws?utm_term=anarkali+audio+songs', which is presented as a lure for 'Anarkali audio songs'. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or to download further malware. The authoring application 'wkhtmltopdf' is noted but does not directly indicate maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/aws?utm_term=anarkali+audio+songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420600/normal_5ff0746e32314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387702/normal_5fd3313ec2a5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427287/normal_5ff19a630c3cb.pdfIn PDF document text
    • http://wegijezunulej.22web.org/siruthai_tamil_movie_video_song_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446035/normal_5feeb2c8b6ad2.pdfIn PDF document text
    • http://talezoruvaje.iblogger.org/android_kotlin_adapter_example.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/acute_cerebral_infarction_guideline.pdfIn PDF document text
    • http://vizumun.rf.gd/54575453620.pdfIn PDF document text
    • http://vaguwiraji.rf.gd/membrane_diffusion_lab_answer_key_phet.pdfIn PDF document text
    • http://rawatakutuju.rf.gd/uk_charity_registration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/45205298174.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/nejija.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/brtten_nete_excel_forml.pdfIn PDF document text
    • http://dimegebewode.epizy.com/70396580230.pdfIn PDF document text
    • http://velefejaforafe.rf.gd/24888061881.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/black_twitter_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/notorelesiraturuxezil.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/10413859418.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/6405143972.pdfIn PDF document text
    • http://wujasulo.epizy.com/litisosu.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/care1st_medicare_prior_authorization_form.pdfIn PDF document text
    • http://japusorusepex.rf.gd/79240635745.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F7 5044 bytes
SHA-256: 1f7b1c18f13c8022cd38d310e3915002682b055f12bab5bbda692eb2d0a9e61e
font_01_sfnt_off0000e82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82F 11304 bytes
SHA-256: cdc68084f938fa3ed41621c01b3336b6ca18c73542e01d82e0fb1a7cef22366b

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